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Doss [256]
3 years ago
6

Please need help on this

Mathematics
1 answer:
earnstyle [38]3 years ago
3 0

the coordinates for b would be (0,3)which the answer is b

*remember that the bottom line of the graph is the x-axis while the line in the other that goes up and down is the y-axis so the use this (x,y)

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Answer needed -3x + 9 = 18
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If a person's eye level is h meters above sea level and he can see d kilometers to the horizon, then d=3.57h. Suppose the person
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54.3m

Step-by-step explanation:

h = distance above sea level

d = distance he can sea above sea level

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6 0
3 years ago
The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe
mr Goodwill [35]

6 sec can take penny to strike the ground.

Solution:

Given data:

H_0=288 feet

V_0=48 feet

h(t)=288+48t-16t^2

Re-arrange the terms from greatest degree to smallest degree.

h(t)=-16t^2+48t+288

We can solve it by applying quadratic formula,

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Here a = –16, b = 48, c = 288

$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}

$t=\frac{-48\pm \sqrt{2304+18432}}{-32}

$t=\frac{-48\pm \sqrt{20736}}{-32}

$t=\frac{-48\pm144}{-32}

Now, write find two t's using plus and minus operation.

$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}

$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}

t = –3 (or)   t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

8 0
2 years ago
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